Research On Optimization Of Joint Distribution Route Of Cold Chain Logistics Considering Carbon Emissions

With the upgrading of consumption,the public’s demand and quality requirements for cold chain products are also increasing,which promotes the rapid development of China’s cold chain logistics industry.Cold chain logistics,as a transportation business with high energy consumption and high carbon emissions,causes enterprises to face higher cost pressures,and it also contradicts the "low-carbon economy" advocated by the current society,so that the research in academia must consider its rapid development.The relationship between economic benefits and environmental impacts.In addition,China’s cold chain logistics started late,and the level of development is relatively backward.The industry presents a small-scale and low-efficiency situation,resulting in low overall operating efficiency and high operating costs.As an efficient means of social resource sharing and resource integration,joint distribution can improve the efficiency of cold chain logistics operations at the industry level and reduce the operating costs of enterprises.In view of the above background and problems,this paper proposes that the research on the optimization of the cold chain logistics joint distribution path considering carbon emissions has both theoretical significance and practical application value.The main work of this article is as follows:First,it analyzes the research status of vehicle path optimization,cold chain logistics path optimization,low-carbon logistics path optimization,and joint distribution issues at home and abroad.Based on the collection and collation of literature,a theoretical summary of related issues is made to consider carbon for subsequent research.The problem of optimizing the joint distribution path of discharged cold chain logistics has laid a theoretical foundation.Secondly,the low-carbon cold chain logistics joint distribution path optimization model and its solution in the customer resource integration mode are proposed.In this mode,the center of gravity method is used to group customers,and the cold chain logistics distribution is analyzed under the closed parking lot.Cost structure,including fixed cost,variable cost,cargo damage cost,cooling cost,time penalty cost and carbon emission cost,constructed a path optimization model with the minimum total cost as the objective function,designed the interference process suitable for the model,used Simulated annealing algorithm.Thirdly,it further proposes a low-carbon cold chain logistics joint distribution path optimization model and its solution in the integrated mode of vehicles and distribution centers.In this mode,customers do not need to group,and vehicles return to the nearest distribution center after completing the distribution task.Under the open parking conditions,a path optimization model with the minimum total cost as the objective function is constructed to increase the interference process of the model,and combined with the characteristics of the new model to solve using the simulated annealing algorithm.Finally,taking the four cold chain logistics enterprises in Chengdu as an example,we obtained the original low-carbon cold chain logistics distribution in the non-resource integration mode,the low-carbon cold chain logistics joint distribution in the customer resource integration mode,and the low carbon in the vehicle and distribution center resource integration mode.Cold chain logistics jointly distributes the costs and other situations under the three distribution modes and makes a comparative analysis;in the context of vehicle and distribution center resource integration,the relative impact of carbon price changes on carbon emissions and costs is analyzed.The research results show that the joint distribution has certain feasibility and applicability in the practice of cold chain logistics distribution.The low-carbon cold chain logistics joint distribution mode of vehicle and distribution center resource integration is the optimal strategy among the three distribution modes.In addition,with the increase in carbon prices,carbon dioxide emissions will continue to decrease,but the total cost of logistics and distribution will continue to increase.When formulating delivery routes,it is necessary to strike a balance between economic and environmental factors.